MISCIBILITY ENHANCING IN POLYSTYRENE BLENDS WITH A LIQUID CRYSTALLINE POLYMER VIA INCORPORATING IONIC GROUPS Ⅱ.FTIR INVESTIGATION OF INTERMOLECULAR INTERACTIONS

LIU Jie; HE Jiasong; CHEN Shijuan

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MISCIBILITY ENHANCING IN POLYSTYRENE BLENDS WITH A LIQUID CRYSTALLINE POLYMER VIA INCORPORATING IONIC GROUPS Ⅱ.FTIR INVESTIGATION OF INTERMOLECULAR INTERACTIONS

Research Article | 更新时间：2021-03-19

- MISCIBILITY ENHANCING IN POLYSTYRENE BLENDS WITH A LIQUID CRYSTALLINE POLYMER VIA INCORPORATING IONIC GROUPS Ⅱ.FTIR INVESTIGATION OF INTERMOLECULAR INTERACTIONS
- Acta Polymerica Sinica Issue 3, Pages: 276-281(1998)
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- Published：20 June 1998，
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LIU Jie, HE Jiasong, CHEN Shijuan. MISCIBILITY ENHANCING IN POLYSTYRENE BLENDS WITH A LIQUID CRYSTALLINE POLYMER VIA INCORPORATING IONIC GROUPS Ⅱ.FTIR INVESTIGATION OF INTERMOLECULAR INTERACTIONS. [J]. Acta Polymerica Sinica (3):276-281(1998)
DOI：

LIU Jie, HE Jiasong, CHEN Shijuan. MISCIBILITY ENHANCING IN POLYSTYRENE BLENDS WITH A LIQUID CRYSTALLINE POLYMER VIA INCORPORATING IONIC GROUPS Ⅱ.FTIR INVESTIGATION OF INTERMOLECULAR INTERACTIONS. [J]. Acta Polymerica Sinica (3):276-281(1998) DOI：

摘要

向聚苯乙烯（ＰＳ）中引入磺酸基团可以有效地改善ＰＳ与一种热致液晶聚合物（ＬＣＰ）之间的相容性．用溶液共混的方法制备了ＰＳ和磺化聚苯乙烯（ＨＳＰＳ）与ＬＣＰ的共混物．用ＦＴＩＲ以及红外光谱的合成技术对ＬＣＰ共混体系进行了表征．共混物中组分聚合物特征吸收的位置和谱图的形状表明在ＬＣＰ与ＰＳ分子间没有相互作用发生

而在ＬＣＰ与ＨＳＰＳ分子间则存在较强的相互作用．谱图差减技术确认了ＬＣＰ分子中Ｃ=Ｏ与Ｃ—Ｏ基团和ＨＳＰＳ中的磺酸基团参与了相互作用

使得这些基团的特征吸收发生了偏移．

Abstract

Presents the FTIR spectra and spectral manipulatioins of liquid crystalline polymer (LCP) blends with polystyrene (PS) and modified polystyrene

lightly sulfonated polystyrene (HSPS).Earlier DSC and SEM studies have demonstrated that HSPS is completely miscible with LCP

although their molecular structure differs greatly from each other

whereas PS is immiscible with LCP.FTIR study now elucidates the origin of miscibility enhancing is the presence of specific interactions involving the carbonyl groups and C —O groups in the LCP and sulfonate groups in the HSPS molecular chains

resulting in very intimate mixin of the HSPS with the LCP's segment.

关键词

ＦＴＩＲ离聚物热致液晶聚合物分子间特殊相互作用相容性

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